The Arduino Pro Mini is a microcontroller board based on the ATmega168.
It has 14 digital input/output pins (of which 6 can be used as PWM
outputs), 8 analog inputs, an on-board resonator, a reset button, and
holes for mounting pin headers.
A six pin header can be connected to an
FTDI cable to provide USB power and
communication to the board.
14 Digital input / output ports
8 analog input port A0 to A7
6 PWM ports (D3, D5 , D6, D9, D10, D11)
Supports serial download
Support for external 5V ~ 12V DC power supply
Clock frequency 16MHz
More details can be found here